The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2011
Filed:
Sep. 24, 2008
David W. Baarman, Fennville, MI (US);
Joshua K. Schwannecke, Grand Rapids, MI (US);
Warren E. Guthrie, West Olive, MI (US);
Richard A. Wahl, Holland, MI (US);
Paul Duckworth, Holland, MI (US);
David W. Baarman, Fennville, MI (US);
Joshua K. Schwannecke, Grand Rapids, MI (US);
Warren E. Guthrie, West Olive, MI (US);
Richard A. Wahl, Holland, MI (US);
Paul Duckworth, Holland, MI (US);
Access Business Group International LLC, Ada, MI (US);
Abstract
A multilayer printed circuit board ('PCB') coil that simulates a coil formed from litz wire. The PCB includes a plurality of alternating conductor and insulating layers interconnected to cooperatively form the coil. Each conductor layer includes a trace that follows the desired coil shape and is divided into a plurality of discrete conductor segments. The segments are electrically connected across layers to provide a plurality of current flow paths (or filaments) that undulate between the layers in a regular, repeating pattern. The coil may be configured so that each filament spends a substantially equal amount of time in proximity to the paired coil and therefore contributes substantially equally to the self or mutual inductance of the coil. Each conductor layer may include a plurality of associated traces and intralayer connector that interconnected so that each filament undulates not only upwardly/downwardly, but also inwardly/outwardly in a regular, repeating pattern.